213
wp-content/plugins/all-in-one-event-calendar/vendor/recaptcha/recaptchalib.php
vendored
Normal file
213
wp-content/plugins/all-in-one-event-calendar/vendor/recaptcha/recaptchalib.php
vendored
Normal file
@@ -0,0 +1,213 @@
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<?php
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/*
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* This is a PHP library that handles calling reCAPTCHA.
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* - Documentation and latest version
|
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* http://recaptcha.net/plugins/php/
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* - Get a reCAPTCHA API Key
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* https://www.google.com/recaptcha/admin/create
|
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* - Discussion group
|
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* http://groups.google.com/group/recaptcha
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*
|
||||
* Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
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* AUTHORS:
|
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* Mike Crawford
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* Ben Maurer
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*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
|
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* in the Software without restriction, including without limitation the rights
|
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
if ( ! defined( 'RECAPTCHA_API_SERVER' ) ) {
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||||
/**
|
||||
* The reCAPTCHA server URL's
|
||||
*/
|
||||
define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
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define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
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define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
|
||||
|
||||
/**
|
||||
* Encodes the given data into a query string format
|
||||
* @param $data - array of string elements to be encoded
|
||||
* @return string - encoded request
|
||||
*/
|
||||
function _recaptcha_qsencode ($data) {
|
||||
$req = "";
|
||||
foreach ( $data as $key => $value )
|
||||
$req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
|
||||
|
||||
// Cut the last '&'
|
||||
$req=substr($req,0,strlen($req)-1);
|
||||
return $req;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Submits an HTTP POST to a reCAPTCHA server
|
||||
* @param string $host
|
||||
* @param string $path
|
||||
* @param array $data
|
||||
* @param int port
|
||||
* @return array response
|
||||
*/
|
||||
function _recaptcha_http_post($host, $path, $data, $port = 80) {
|
||||
|
||||
$req = _recaptcha_qsencode ($data);
|
||||
|
||||
$http_request = "POST $path HTTP/1.0\r\n";
|
||||
$http_request .= "Host: $host\r\n";
|
||||
$http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
|
||||
$http_request .= "Content-Length: " . strlen($req) . "\r\n";
|
||||
$http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
|
||||
$http_request .= "\r\n";
|
||||
$http_request .= $req;
|
||||
|
||||
$response = '';
|
||||
if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
|
||||
die ('Could not open socket');
|
||||
}
|
||||
|
||||
fwrite($fs, $http_request);
|
||||
|
||||
while ( !feof($fs) )
|
||||
$response .= fgets($fs, 1160); // One TCP-IP packet
|
||||
fclose($fs);
|
||||
$response = explode("\r\n\r\n", $response, 2);
|
||||
|
||||
return $response;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Gets the challenge HTML (javascript and non-javascript version).
|
||||
* This is called from the browser, and the resulting reCAPTCHA HTML widget
|
||||
* is embedded within the HTML form it was called from.
|
||||
* @param string $pubkey A public key for reCAPTCHA
|
||||
* @param string $error The error given by reCAPTCHA (optional, default is null)
|
||||
* @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
|
||||
|
||||
* @return string - The HTML to be embedded in the user's form.
|
||||
*/
|
||||
function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
|
||||
{
|
||||
if ($pubkey == null || $pubkey == '') {
|
||||
die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
|
||||
}
|
||||
|
||||
if ($use_ssl) {
|
||||
$server = RECAPTCHA_API_SECURE_SERVER;
|
||||
} else {
|
||||
$server = RECAPTCHA_API_SERVER;
|
||||
}
|
||||
|
||||
$errorpart = "";
|
||||
if ($error) {
|
||||
$errorpart = "&error=" . $error;
|
||||
}
|
||||
return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
|
||||
|
||||
<noscript>
|
||||
<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
|
||||
<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
|
||||
<input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
|
||||
</noscript>';
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* A ReCaptchaResponse is returned from recaptcha_check_answer()
|
||||
*/
|
||||
class ReCaptchaResponse {
|
||||
var $is_valid;
|
||||
var $error;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Calls an HTTP POST function to verify if the user's guess was correct
|
||||
* @param string $privkey
|
||||
* @param string $remoteip
|
||||
* @param string $challenge
|
||||
* @param string $response
|
||||
* @param array $extra_params an array of extra variables to post to the server
|
||||
* @return ReCaptchaResponse
|
||||
*/
|
||||
function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
|
||||
{
|
||||
if ($privkey == null || $privkey == '') {
|
||||
die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
|
||||
}
|
||||
|
||||
if ($remoteip == null || $remoteip == '') {
|
||||
die ("For security reasons, you must pass the remote ip to reCAPTCHA");
|
||||
}
|
||||
|
||||
|
||||
|
||||
//discard spam submissions
|
||||
if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
|
||||
$recaptcha_response = new ReCaptchaResponse();
|
||||
$recaptcha_response->is_valid = false;
|
||||
$recaptcha_response->error = 'incorrect-captcha-sol';
|
||||
return $recaptcha_response;
|
||||
}
|
||||
|
||||
$response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify",
|
||||
array (
|
||||
'privatekey' => $privkey,
|
||||
'remoteip' => $remoteip,
|
||||
'challenge' => $challenge,
|
||||
'response' => $response
|
||||
) + $extra_params
|
||||
);
|
||||
|
||||
$answers = explode ("\n", $response [1]);
|
||||
$recaptcha_response = new ReCaptchaResponse();
|
||||
|
||||
if (trim ($answers [0]) == 'true') {
|
||||
$recaptcha_response->is_valid = true;
|
||||
}
|
||||
else {
|
||||
$recaptcha_response->is_valid = false;
|
||||
$recaptcha_response->error = $answers [1];
|
||||
}
|
||||
return $recaptcha_response;
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* gets a URL where the user can sign up for reCAPTCHA. If your application
|
||||
* has a configuration page where you enter a key, you should provide a link
|
||||
* using this function.
|
||||
* @param string $domain The domain where the page is hosted
|
||||
* @param string $appname The name of your application
|
||||
*/
|
||||
function recaptcha_get_signup_url ($domain = null, $appname = null) {
|
||||
return "https://www.google.com/recaptcha/admin/create?" . _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname));
|
||||
}
|
||||
|
||||
function _recaptcha_aes_pad($val) {
|
||||
$block_size = 16;
|
||||
$numpad = $block_size - (strlen ($val) % $block_size);
|
||||
return str_pad($val, strlen ($val) + $numpad, chr($numpad));
|
||||
}
|
||||
}
|
||||
|
||||
?>
|
||||
Reference in New Issue
Block a user